BSCI 201 Chapter Notes -Peptic Ulcer, Gastric Acid, Ileocecal Valve
18 Feb 2014
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Ingestion is moving foods form one region of the digestive system to another. Propulsion is moving foods form one region of the digestive system to another. Absorption is the movement of nutrients into the bloodstream, end products of digestive are absorbed in the bloodor lymph of food that was chemically and physically broken down. Visceral smooth muscle shows rhythmic cycles of activity caused by pacemaker cells. Mostly controlled by reflexes via the parasympathetic ns. Gi activity stimulated by parasympathetic and inhibited by sympathetic innervations. Chemical and mechanical receptors are located in organ walls that trigger reflexes. People should eat slowly so that the stimuli (below) can get to your brain. Acidic beverages causes you to eat more (fruit juices and soda) Activity of the digestive tract in the old age. Activity of the digestive tract in old age. The longer food sits in the gi tract, the more water it absorbs.
